What Is the DeatschWerks DW300C Fuel Pump?

The DeatschWerks DW300C is a:

• High-flow in-tank electric fuel pump
• Rated at 340 liters per hour (LPH)

This complete kit includes:

• Installation hardware
• Fuel pump integration components
• Ethanol-compatible fueling support

Designed specifically for:

• Honda Civic applications
• Acura RSX platforms
• Mazda MX-5/Miata vehicles

The DW300C supports:

• Turbocharged setups
• E85 and flex fuel builds
• High-performance naturally aspirated applications
• Moderate-to-high horsepower street cars

Basically:
Cars that started as “simple projects” before things escalated emotionally.

Fuel Pump, DW300C, Electrical, In-Tank, 340 lph, Set up Kit, Gas / Ethanol, Honda Civic / Acura RSX / Mazda MX5 2001-15, Kit

Vehicle Fitment

The DeatschWerks DW300C Fuel Pump Kit fits various:

Honda

• 2001–2015 Honda Civic models

Acura

• 2002–2006 Acura RSX

Mazda

• Mazda MX-5 Miata applications

Including many:

• K-series swaps
• Turbo Civic builds
• RSX Type-S projects
• Turbo Miata setups

Especially vehicles targeting:

• E85 tuning
• Larger injectors
• Increased boost
• Modern standalone ECU setups

“bundle dimensions: 6.seventy five”” (l) x 2.25″” (w) x 4.25″” (h)”
bundle amount: 1

Why Upgrade to a 340LPH Fuel Pump?

Factory fuel pumps were designed around:

• OEM horsepower
• Conservative fuel demand
• Factory airflow levels

Once modifications increase airflow and fuel demand, the stock pump can quickly become inadequate.

A 340LPH pump dramatically improves:

• Fuel volume
• Fuel pressure stability
• Injector support
• High-load fuel delivery

Especially important once:

• Boost increases
• Injector sizes climb
• E85 enters the equation

Because turbocharged engines consume fuel with shocking aggression once power levels start climbing.

product sort: auto section
u . s . a . of origin: china
Are compatible sort: Common Are compatible

Why the DW300C Became So Popular

The DW300C became one of the most respected in-tank pumps in the aftermarket because it offers:

• Excellent flow capability
• Compact packaging
• Strong reliability
• Ethanol compatibility

This makes it ideal for:

• Street builds
• Track cars
• Roll racing setups
• Turbocharged daily drivers

Without immediately requiring:

• Dual pump systems
• External surge tanks
• Full motorsport fuel cells

Not every enthusiast wants their trunk sounding like a refinery.

Perfect for Turbo Honda and K-Series Builds

Honda enthusiasts love boost.

And honestly, the K-series platform responds incredibly well to:

• Turbocharging
• E85
• Higher RPM tuning
• Aggressive ignition timing

But once power levels increase, the factory fuel system quickly becomes overwhelmed.

The DW300C helps support:

• Large injectors
• Flex fuel tuning
• High boost pressure
• Reliable fuel delivery

Because boosted Hondas have absolutely no patience for weak fueling systems.

Usually the rods leave first.

Excellent Upgrade for Turbo Miata Builds

The Mazda MX-5/Miata community also embraced turbocharging aggressively.

Why?
Because lightweight turbo cars are hilarious.

The DW300C is ideal for:

• Turbo NA Miatas
• NB Miata builds
• E85 roadster setups
• Track-focused MX-5 projects

Especially combinations targeting:

• Moderate-to-high horsepower
• Improved fuel reliability
• Stable fueling during cornering

Because Miatas spend most of their lives being driven at full emotional commitment.

E85 Compatibility Changes Everything

Modern performance tuning increasingly revolves around E85 because ethanol provides:

• Better knock resistance
• Cooler combustion temperatures
• Increased timing capability
• Higher boost tolerance

But ethanol also requires significantly more fuel volume than gasoline.

That means:

• Fuel pumps work harder
• Injectors flow more
• Fuel systems become critical

The DW300C is designed specifically to support:

• Ethanol-compatible fueling
• Modern flex fuel setups
• High-demand EFI systems

Especially on:

• Turbocharged imports
• Street/track hybrids
• High-RPM applications

Included Installation Kit Simplifies the Upgrade

The included install kit helps:

• Simplify installation
• Improve fitment
• Reduce compatibility headaches

Especially important on:

• Older Civics
• Swapped Hondas
• Custom Miata builds

Because nothing extends a “simple install” longer than discovering you’re missing one critical fuel system adapter at midnight.

Supporting Mods You Should Pair With It

The DW300C works best alongside:

• Larger injectors
• ECU tuning
• Flex fuel kits
• Adjustable fuel pressure regulators
• Ethanol-safe fuel lines

Because fuel systems are complete ecosystems.

One weak component eventually limits everything else.

Usually right when the turbo finally hits full boost.

Why Enthusiasts Trust DeatschWerks

DeatschWerks has become one of the most respected names in aftermarket fueling because they focus heavily on:

• Fuel injector engineering
• High-flow fuel pumps
• Ethanol compatibility
• Motorsport durability

Their products are trusted across:

• Drag racing
• Drift competition
• Street performance
• Time attack
• Roll racing

Reliable fueling remains one of the most important foundations of reliable horsepower.

Not giant spoilers.
Not crackle tunes.
Fuel.

Final Thoughts

The DeatschWerks DW300C 340LPH Fuel Pump Kit is one of the best fueling upgrades available for Honda Civic, Acura RSX, and Mazda MX-5 enthusiasts building reliable modern horsepower.

With:

• 340LPH flow capability
• E85 compatibility
• Compact in-tank design
• Included install hardware

…it’s an ideal solution for:

• Turbo Honda builds
• K-swapped projects
• E85 street cars
• Turbo Miatas
• High-performance daily drivers

Because once boost and ethanol enter the equation, fuel delivery becomes critical.

And turbo imports are already chaotic enough without fuel starvation joining the party.